Brake assembly for a vehicle and method for applying parking brake force

Abstract

The invention relates to a brake assembly (1, 1 ', 1' ', 1' '', 1'' '''') for a vehicle, comprising: a brake disc (10, 10 ',..., 10 '''' '''') rotatable about an axis of rotation (R); at least one service brake assembly (30; 30 ', 30' ', 30 '''') comprising at least one service brake lining (32, 32', 32 '', 32'' '') and configured to apply a service braking force on a radial surface side of the brake disc (10, 10 ',..., 10'' '''' '') wherein the at least one service brake lining (32, 32', 32'', 32 '''') is axially movable relative to the axis of rotation (R) and comprises a service brake braking surface facing the radial surface side of the brake disc (10, 10 ',..., 10 '''' '') to apply a service braking force; and at least one parking brake assembly (20; 20 ', 20' ', 20 '''') comprising at least one parking brake lining (22, 22', 22 '', 22'' '',..., 22'' '''') and configured to exert a parking braking force on said or another radial surface side of the brake disc (10, 10 ',..., 10 '''' '''') wherein said at least one parking brake lining (22, 22', 22 '', 22'' '',..., 22'' '''') is axially movable relative to the axis of rotation (R) and comprises a brake pad (22, 22 ', 22 '', 22'' '',..., 22'' '''') facing the brake disc (10, 10',..., 10 '''' ''). The parking brake surface of the at least one parking brake lining (22, 22 ', 22' ', 22' '',..., 22'' '''') is arranged at a radial parking brake lining distance (rPB) relative to the axis of rotation (R), which distance corresponds to the radial parking brake lining distance (rPB) of the at least one service brake lining (32, 32 ', 32' ', 32' ', 32' ', 32' ', 32' ', 32' ') of the at least one service brake lining (32; 32 '''') of the brake surface of the service brake differs in radial service brake lining distances (rSB).

Description

Technical Field

[0001] The present invention relates to a brake assembly for a vehicle, a method for applying a parking brake force to a brake disc of the brake assembly, and a vehicle comprising the brake assembly. Background Art

[0002] In today's commercial vehicles, the parking brake is often integrated into the service brake. From a cost point of view, the integrated brake version is very attractive. However, in order to realize the parking brake function, a separate parking brake actuator is required, such as a spring element for prestressing the auxiliary piston. This part of the parking brake device takes up a lot of space, because it must be ensured that the force of the spring is sufficient over the entire stroke. Summary of the invention

[0003] It is therefore an object of the present invention to provide a brake assembly for a vehicle which can provide a compact and / or flexible design.

[0004] This object is solved by the subject matter of the independent claims. Further aspects of the invention are subject of the dependent claims.

[0005] According to the present invention, a brake assembly for a vehicle comprises: a brake disc rotatable about a rotation axis; and at least one service brake assembly, the service brake assembly comprising at least one service brake lining and configured to apply a service braking force on a radial surface side of the brake disc, wherein the at least one service brake lining is axially movable relative to the rotation axis and comprises a service brake braking surface facing the radial surface side of the brake disc to apply the service braking force. The brake assembly also comprises at least one parking brake assembly, the parking brake assembly comprising at least one parking brake lining and configured to apply a parking braking force on the one or other radial surface side of the brake disc, wherein the at least one parking brake lining is axially movable relative to the rotation axis and comprises a parking brake braking surface facing the one or other radial surface side of the brake disc to apply the parking brake force. The parking brake braking surface of the at least one parking brake lining is arranged at a radial parking brake lining distance relative to the rotation axis, and the radial parking brake lining distance is different from the radial service brake lining distance of the service brake braking surface of the at least one service brake lining.

[0006] Thus, in terms of providing separate parking brake linings and service brake linings, the brake assembly comprises a parking brake assembly separate from the service brake assembly, wherein the parking brake lining and the service brake lining have respective different braking surfaces, which are movable in the axial direction respectively relative to the axis of rotation of the brake disc to apply a braking force. Thus, the parking brake assembly can be spatially separated from the service brake assembly, or can be integrated in the service brake assembly, but the at least one parking brake lining is separated from the at least one service brake lining for respective independent movement. In terms of design flexibility, it may be advantageous to provide a parking brake assembly spatially separated from the service brake assembly for independent positioning or the like. Furthermore, separating the parking brake assembly from the service brake assembly (e.g. by a separate caliper) allows providing a brake assembly with a reduced overall axial length, while still delivering sufficient braking force or clamping force respectively. Thus, it is also possible to mount the parking brake assembly on the front axle of the vehicle. In turn, integrating the parking brake assembly into the service brake assembly (e.g. in a common caliper) allows a more compact design.

[0007] As another basic principle, the different radial distances of the parking brake braking surface and the service brake braking surface relative to the rotational axis of the brake disc lead to different levers regarding the achievable braking torque acting on the brake disc. Due to the different radial distances and thus different levers, the parking brake braking surface and the service brake braking surface may be subjected to different braking torques when the same clamping force is applied. In turn, the same braking torque may require different clamping forces. The corresponding radial distance relative to the rotational axis refers to the radial distance from the rotational axis to the middle height of the corresponding braking surface in the radial direction relative to the rotational axis. Specifically, the radial parking brake lining distance is the radial distance from the rotational axis to the side of the parking brake lining facing the rotational axis in the radial direction plus half of the radial distance between the side of the parking brake facing the rotational axis in the radial direction and the opposite side of the parking brake lining facing away from the rotational axis in the radial direction. Therefore, the radial service brake pad distance is the radial distance from the rotation axis to the side of the service brake pad facing the rotation axis in the radial direction plus half of the radial distance between the side of the service brake facing the rotation axis in the radial direction and the opposite side of the service brake pad facing away from the rotation axis in the radial direction.

[0008] In some embodiments, the parking brake lining and the service brake lining are configured and arranged at respective radial distances so that the parking brake lining and the service brake lining do not act on the same circumferential portion of the brake disc. In other words, the parking brake lining and the service brake lining are configured and arranged at respective radial distances so that the radial distance of the one side of the parking brake lining or the service brake lining facing the axis of rotation in the radial direction is greater than the radial distance of the opposite side of the other brake lining (i.e., the service brake lining or the parking brake lining) facing away from the axis of rotation in the radial direction. Therefore, in this configuration, the parking brake assembly uses a different ring portion of the brake disc than the service brake assembly to transmit force.

[0009] In summary, in addition to the advantages of a more compact design and / or increased design flexibility, the brake assembly may also provide less heat input from the brake disc into the parking brake assembly, because the parking brake braking surface of the parking brake lining is independent and not part of the service brake braking surface. In addition, the parking brake lining may be subject to less wear, which may allow the corresponding wear adjuster mechanism to be omitted and a less complex active caliper release to be achieved, which may also provide a relatively strong active caliper release spring in view of the omission of the wear adjuster, thereby helping to improve efficiency.

[0010] In some embodiments, relative to the axis of rotation, the radial parking brake pad distance is greater than the radial service brake pad distance.

[0011] For example, an outer ring portion of the brake disc extending circumferentially around the rotation axis as a parking brake disc portion can be allocated to the parking brake braking surface, while an inner ring portion (preferably, an adjacent ring portion) of the brake disc extending circumferentially around the rotation axis as a service brake disc portion can be allocated to the service brake braking surface. Due to the increase in the friction radius of the parking brake lining corresponding to the radial parking brake lining distance, the clamping force required for the parking brake function to achieve the same braking torque can be reduced compared to a smaller friction radius. This can allow the parking brake assembly to use a harder caliper. Conversely, a service brake assembly with a smaller friction radius of the service brake lining corresponding to the radial service brake lining distance may require an increased clamping force to achieve the same braking torque. However, this requirement can be easily achieved through appropriate service brake assembly design.

[0012] In some embodiments, the radial parking brake pad distance is less than the radial service brake pad distance relative to the axis of rotation.

[0013] Here, the above-mentioned reverse principle also applies. Specifically, the inner ring portion of the brake disc extending circumferentially around the rotation axis as the parking brake disc portion can be allocated to the parking brake braking surface, while the outer ring portion (preferably, the adjacent ring portion) of the brake disc extending circumferentially around the rotation axis as the service brake disc portion can be allocated to the service brake braking surface. Therefore, due to the smaller friction radius, the parking brake assembly may require a relatively large clamping force. However, as described below, this potential requirement can be compensated to a certain extent by providing a friction pairing relative to the parking brake disc portion and the parking brake braking surface. In turn, this configuration allows the service brake assembly to operate with a relatively small clamping force under the same braking torque.

[0014] In some embodiments, the brake disc includes: a parking brake disc portion, which, in at least one rotational position of the brake disc, faces the parking brake braking surface of the at least one parking brake lining; and a service brake disc portion, which, in the at least one rotational position or at least one other rotational position of the brake disc, faces the service brake braking surface of the at least one service brake lining, and wherein the friction pairing of the parking brake disc portion and the parking brake braking surface of the at least one parking brake lining is configured to provide a friction coefficient different from the friction coefficient of the friction pairing of the service brake disc portion and the service brake braking surface of the at least one service brake lining.

[0015] Different friction pairs or friction coefficients can be provided by different materials or corresponding coatings for the parking brake disc part and the service brake disc part of the brake disc, respectively. For example, the parking brake disc part can be provided by a disc body made of a single cast brake disc (e.g., a cast iron disc), while the service brake disc part is provided by a separate service brake braking part of a different material mounted on the disc body or by a coating or the like. Alternatively or additionally, the parking brake braking surface can be made of a material different from the material of the service brake braking surface or can include a material different from the material of the service brake braking surface. In principle, the parking brake disc part and / or the service brake disc part can be mounted on the disc body as a friction ring part, which can provide the form-fitting part described later as an alternative or additional solution to provide different friction pairs. The parking brake disc part and / or the service brake disc part as separate components to be mounted on the disc body can be made of stainless steel to reduce corrosion effects while reducing costs by not providing an entire brake disc made of stainless steel. The parking brake disc portion and / or the service brake disc portion can also be coaxially arranged to form an annular segment of the brake disc. The brake disc can provide the parking brake disc portion and / or the service brake disc portion parallel to each other and / or concentrically with respect to the axis of rotation on each outer radial surface side.

[0016] Besides using different materials for the parking brake disc part, the service brake disc part, the parking brake braking surface and / or the service brake braking surface, the corresponding parts or surfaces can alternatively or additionally be provided with different surface properties in order to provide correspondingly different friction pairings.

[0017] Thus, in a configuration as described above in which the radial parking brake lining distance is less than the radial service brake lining distance, the friction pairing of the parking brake braking surface and the parking brake disc portion can be configured to provide a higher coefficient of friction than the friction pairing of the service brake braking surface and the service brake disc portion, or at least a coefficient of friction higher than 0.3, preferably 0.45. As a result, the clamping force required for the parking brake assembly can be reduced. Furthermore, in addition to at least partially compensating for the relatively higher clamping force required in the configuration in which the radial parking brake lining distance is less than the radial service brake lining distance, the possible reduction in clamping force relative to the parking brake assembly also has an effect on the configuration in which the radial parking brake lining distance is greater than the radial service brake lining distance. In such a configuration, the clamping force required for the same braking torque can be further reduced, for example, to allow a more compact design.

[0018] In some embodiments, the friction coefficient of the friction pairing of the parking brake braking surface of the at least one parking brake lining with the brake disc is at least 0.55.

[0019] For example, the parking brake lining may be made of rubber material to achieve a friction coefficient greater than 0.55, preferably greater than 0.6. As mentioned above, the friction coefficient can in principle be influenced by coating, machining and / or connection of corresponding materials and / or machined parts.

[0020] In some embodiments, the at least one parking brake lining is arranged to extend from an outer periphery or an inner periphery of the brake disc in a cooling channel of the brake disc, the cooling channel being formed between two outer radial surface sides of the brake disc.

[0021] Such a cooling channel may be provided as a groove extending in the circumferential direction at least between two radial surface sides of the brake disc facing away from each other. As an example, at least one outer cooling channel portion having an opening in a radial direction facing away from the axis of rotation and / or at least one inner cooling channel portion having an opening in a radial direction facing the axis of rotation may be formed in the brake disc. The at least one parking brake lining provides a parking brake braking surface extending at least partially in the cooling channel, for example, when the at least one parking brake lining moves axially, the inner cooling channel portion moves toward the surface of the inner cooling channel extending radially relative to the axis of rotation. In principle, the term "parking brake lining" may not be limited to a flat body, but may include any type of construction for providing a corresponding parking brake braking surface so as to be frictionally paired with the brake disc to apply a braking force. The axial movement of the parking brake braking surface extending at least partially in the cooling channel may be actuated by a ball ramp mechanism. The ball ramp mechanism may be configured to move a parking brake braking surface toward the opposite radial surface side of the cooling channel. In one variation, the parking brake assembly may include a brake lining having two opposing parking brake braking surfaces, each parking brake braking surface moving toward the corresponding opposing radial surface side of the cooling channel. In other words, the opposing parking brake braking surfaces will be separated from each other to simultaneously apply braking forces on the opposing radial surface sides of the cooling channel. In another variation, the parking brake assembly may provide two separate parking brake linings, wherein the corresponding parking brake braking surfaces are facing away from each other in the axial direction relative to the rotation axis of the brake disc. The ball ramp mechanism may be configured to separate the opposing parking brake linings, which is equivalent to a configuration having two parking brake braking surfaces on one parking brake lining. The actuation of the at least one parking brake lining or one or more parking brake braking surfaces is not limited to actuation by a ball ramp mechanism, but may also be actuated by another electric, hydraulic or pneumatic mechanism, which may include any other actuator, such as a lever, a control slide, a piston or the like.

[0022] Since the friction pairing of the parking brake braking surface with the brake disc is arranged in the cooling channel of the brake disc, the so-called cold afterheating effect is avoided or at least reduced. Furthermore, the use of a parking brake braking surface with a relatively high friction coefficient, in particular with respect to the parking brake braking surface acting on the inner cooling channel portion, for example to compensate for a relatively small radial parking brake lining distance, may not have any influence on the controllability of the service brake assembly.

[0023] In some embodiments, a brake assembly includes: the parking brake assembly including at least one parking brake lining arranged to extend in a cooling channel of a brake disc; and another parking brake assembly.

[0024] The further parking brake assembly may be a conventional parking brake assembly known in the art that is integrated into a service brake assembly. Alternatively, the further parking brake assembly may be a parking brake assembly according to the present invention.

[0025] Preferably, the parking brake assembly arranged to extend in the cooling channel of the brake disc can thereby form an auxiliary parking brake assembly to support another parking brake assembly or to be activated only under certain circumstances or in a predetermined operating mode. For example, the parking brake assembly arranged to extend in the cooling channel of the brake disc can be activated only when the vehicle comprising the respective brake assembly is at rest. By limiting such activation to the stationary state of the vehicle, wear of the respective at least one parking brake lining can be avoided. Furthermore, dynamic torque effects do not have to be taken into account.

[0026] In some embodiments, the parking brake braking surface of the at least one parking brake lining comprises a parking brake lining form-fitting portion and the brake disc comprises a corresponding brake disc form-fitting portion at a radial parking brake lining distance.

[0027] Thus, the clamping force provided by the frictional pairing of the parking brake braking surface and the brake disc can be further supported by a form-fitting engagement. Thus, the parking brake braking surface can be configured to provide a positive contour as a form-fitting part of the parking brake lining to engage with a corresponding negative contour as a form-fitting part of the brake disc. Such a contour can be formed as a sawtooth with equal pitch. For example, the sawtooth has a certain defined contact angle.

[0028] The force transmission from the parking brake lining to the brake disc is therefore a combination of frictional pairing and form fit after further consideration of the contact angle provided by the serrations. In other words, the friction forces act on the contact surfaces of both the engaged parking brake lining form-fitting portion and the brake disc form-fitting portion, which also transmit forces via a form-fitting connection.

[0029] The brake disc form-fitting portion may be formed integrally by the parking brake disc portion or be part of the parking brake disc portion. Alternatively or additionally, the brake disc form-fitting portion may be provided by a separate brake disc form-fitting portion mounted to the parking brake disc portion, for example as an additional ring member. This may enhance the flexibility in terms of material and / or shape selection and may reduce costs by limiting the use of expensive and / or wear-sensitive materials for the respective parts.

[0030] The combination of a friction-based configuration and a form-fit-based configuration with respect to the pairing of the parking brake braking surface and the parking brake disc part can significantly reduce the required clamping force to be provided by the parking brake assembly. As a result, a corresponding actuator mechanism and a corresponding clamping unit (e.g., a caliper) for the parking brake lining can provide a more compact design. This is particularly advantageous for commercial vehicles, such as trucks, in particular electric trucks with electric axles and batteries, which are often subject to installation space constraints. A less complex clamping unit can also reduce costs and weight and can increase functional safety with respect to a reduced number of parts (which can fail). In addition, a simple manufacture and development of the parking brake lining can be achieved.

[0031] In some embodiments, the parking brake assembly includes a parking brake lining support assembly, which carries the at least one parking brake lining and is configured to move the at least one parking brake lining in an axial direction toward the brake disc or allow corresponding movement of the at least one parking brake lining, and wherein the parking brake assembly includes at least one local displacement member, which is arranged between the at least one parking brake lining and the parking brake lining support assembly and is configured to allow relative displacement of the at least one parking brake lining relative to the parking brake lining support assembly in a direction within the braking surface plane.

[0032] Since the parking brake lining form-fitting portion may not be ideally positioned relative to the corresponding brake disc form-fitting portion for a direct form-fitting match, the at least one local displacement member allows the parking brake lining to be displaced to a certain extent in a direction within the plane of the parking brake braking surface when in contact by the brake disc. Preferably, the at least one local displacement member is configured to allow the parking brake lining to be displaced at least in a direction of the rotational direction substantially perpendicular to the rotational axis and perpendicular to a projection of the radial direction.

[0033] The parking brake lining carrier assembly may include an actuator mechanism to move the at least one parking brake lining toward the brake disc in an axial direction substantially perpendicular to the braking surface of the at least one parking brake lining. Alternatively, the actuator mechanism may be separate from the parking brake lining carrier assembly, wherein the parking brake lining carrier assembly allows corresponding movement of the at least one parking brake lining by carrying the at least one parking brake lining and providing an interface for the actuator mechanism to actuate the at least one parking brake lining.

[0034] In some embodiments, the at least one local displacement member is a bearing member arranged on a surface side of the at least one parking brake lining opposite to the braking surface of the at least one parking brake lining.

[0035] Thus, the parking brake lining can be supported by the bearing with the parking brake support with at least one degree of freedom in the parking brake braking surface plane, preferably in a direction of rotation substantially perpendicular to the rotation axis and perpendicular to the projection of the radial direction. The bearing member can be provided by at least one roller.

[0036] In some embodiments, the at least one local displacement member is a spring member, which is arranged on a lateral surface side of the at least one parking brake lining, which lateral surface side is basically parallel to the axial direction and perpendicular to a projection of the rotational movement of the brake disc parallel to the at least one parking brake lining, wherein the corresponding spring force acts in the direction of the projection of the rotational movement of the brake disc parallel to the at least one parking brake lining.

[0037] Preferably, the parking brake assembly comprises at least two spring members, each of which is arranged on opposite lateral surface sides of the at least one parking brake lining. For example, a first spring member as a compression spring member is arranged on the upstream lateral surface side relative to the rotational direction, and a second spring member as the other compression spring member is arranged on the downstream lateral surface side. If the corresponding parking brake lining is moved in the rotational direction by the brake disc when in contact before the brake disc stops, the first spring is extended and the second spring is compressed. When the parking brake lining is released from the brake disc, the parking brake lining is re-centered by the spring member. Preferably, the first spring member and the second spring member are pre-compression spring members, wherein, upon corresponding movement of the brake disc engaged with the parking brake lining, one of the first spring member or the second spring member is compressed even more, while the other spring member relaxes a little.

[0038] In some embodiments, the parking brake assembly comprises an overload clutch which is arranged on a surface side of the at least one parking brake lining opposite to a braking surface of the at least one parking brake lining.

[0039] When the braking torque is too high, for example, when one wheel of one axle is in force-transmitting contact with the parking brake assembly earlier than other parking brake assemblies, the overload clutch can allow the parking brake lining to be withdrawn from the brake disc. In this case, when the braking torque is too high, the overload clutch allows the parking brake lining form-fitting portion to jump into the next section of the brake disc form-fitting portion. By jumping into the next section, a more even sharing of the total braking torque between all parking brake assemblies of the vehicle can be achieved. Otherwise, the parking brake assembly that first receives the form-fitting force transmission from the parking brake lining to the parking brake bracket will have to bear the braking force of the entire vehicle. This may overload the bearing and may destroy or at least damage the parking brake. Preferably, the overload clutch can be positioned on the surface side of the parking brake lining opposite to the parking brake braking surface, for example, positioned in an actuator mechanism (e.g., a piston or plunger) for actuating the parking brake lining. However, the overload clutch can also be positioned at other locations and does not have to be arranged directly on the surface side of the at least one parking brake lining opposite the braking surface of the at least one parking brake lining. For example, the overload clutch can be positioned directly or indirectly between the parking brake lining and the lever of the lever mechanism, as described below.

[0040] In a variant, the overload clutch function can be realized by a common lever mechanism of the actuator mechanism or an axial spring member as described below. For example, the overload clutch function can be realized by simply using a lever mechanism to overcome the spring of the actuator mechanism to push the actuator piston of the actuator mechanism back.

[0041] In an exemplary embodiment, the positive-fitting portion of the parking brake lining and the brake disc portion are formed as saw teeth, wherein the individual teeth have a certain defined contact angle. On the one hand, the contact angle prevents self-locking due to friction, so that an overload function can be achieved. On the other hand, the contact angle is large enough to reduce the required clamping force as much as possible. The force transmission with this geometry is therefore a combination of frictional matching and positive fit.

[0042] In some embodiments, the parking brake assembly comprises an axial spring member arranged on a surface side of the at least one parking brake lining opposite to a braking surface of the at least one parking brake lining, wherein the predetermined axial spring force acts in an axial direction.

[0043] For an axial spring member providing an overload clutch function, the axial spring member can be compressed to provide a reverse clamping stroke when the parking brake torque is too high. The parking brake lining is pushed back according to a form-fitting profile (eg by the angle of the serrations).

[0044] Alternatively or additionally, the axial spring member may provide a preload clamping mechanism by the spring force of the axial spring member without the previously described alignment of the spring member. For example, the axial spring member may be directly connected to an actuator mechanism (e.g., a piston or plunger), but may also be positioned, for example, between the parking brake lining and the lever mechanism or in the axial spring member chamber to act on the surface side of the parking brake lining opposite to the parking brake braking surface. When the parking brake lining form-fitting portion is not precisely aligned with the brake disc form-fitting portion when actuated to apply the braking force, the brake disc is configured to slide relative to the parking brake lining to the next section of the parking brake lining form-fitting portion, for example the next serration section, and the parking brake lining form-fitting portion may thereby snap into the brake disc form-fitting portion to transmit the clamping force.

[0045] In another aspect, the invention relates to a method for applying a parking brake force on the radial surface side of a brake disc of a brake assembly as described above, wherein the at least one parking brake lining of the brake assembly as described above extending in a cooling channel is activated to apply the parking brake force only when the vehicle is stationary.

[0046] As described above with respect to a brake assembly having a parking brake lining extending at least partially in a cooling channel of a brake disc, the parking brake assembly provides a friction pair in the region of the cooling channel of the brake disc to realize the parking brake function. For example, a small additional friction ring area is positioned on the inner radial surface wall of the cooling channel as a parking brake disc part, which will be used for the parking brake. In particular, since such a parking brake assembly is configured to act on the cooling channel as an additional or auxiliary parking brake assembly as described above, the corresponding parking brake design can be kept compact. In particular, since the parking brake assembly is only activated in a stationary state of the corresponding vehicle or at least its corresponding wheel, the parking brake assembly can be configured only to apply a clamping force to keep the vehicle in a stationary state, rather than to brake the vehicle according to a deceleration procedure.

[0047] In principle, any features disclosed with respect to the brake assembly or the parking brake assembly, respectively, also apply to the method, and vice versa.

[0048] In another aspect, the present invention relates to a vehicle comprising a brake assembly as described above, wherein the vehicle is preferably configured as a commercial vehicle, a truck, a trailer, a bus, and / or a combination of a tractor and a trailer, and / or wherein the vehicle preferably comprises a pure electric, hybrid or conventional powertrain.

[0049] Commercial vehicles are particularly associated with relatively large and heavy components. Therefore, the use of the aforementioned brake assembly for commercial vehicles allows for increased compactness and design flexibility. In addition, for electric vehicles or hybrid vehicles, the installation space for the brake assembly may be further reduced. Therefore, the use of the aforementioned brake assembly, in particular the parking brake assembly, may help to reduce the installation space requirements or may allow for a more flexible distribution of the individual components within the available space. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Further advantages, aspects and details of the invention are derived from the claims, the following description of exemplary embodiments applying the principles of the invention, and the corresponding exemplary drawings.

[0051] Figure 1 is a side view of a brake assembly according to a first exemplary embodiment of the brake assembly;

[0052] Figure 2 is a side view of a brake assembly according to a second exemplary embodiment of the brake assembly;

[0053] Figure 3 is a side view of a brake assembly according to a third exemplary embodiment of the brake assembly;

[0054] Figure 4 is applicable according to Figure 3 A cross-sectional view of a cross section of a parking brake assembly of the brake assembly;

[0055] Figure 5 is a side view of a brake disc according to an exemplary embodiment;

[0056] Figure 6 is based on Figure 5 A cross-sectional view of a cross section of a brake disc;

[0057] Figure 7 is a side view of a brake assembly according to a fourth exemplary embodiment of the brake assembly;

[0058] Figure 8 is applicable according to Figure 7 A cross-sectional view of a cross section of a parking brake assembly of the brake assembly;

[0059] Fig. 9 is a cross-sectional view of a cross section of a brake assembly according to a fifth exemplary embodiment of the brake assembly;

[0060] Fig.10 is a cross-sectional view of a cross section of a brake assembly according to a sixth exemplary embodiment of the brake assembly;

[0061] Fig.11 is based on Figure 3A top view of a cross section of a brake assembly;

[0062] Figures 12a to 12e is based on Figure 3 and Fig.11 A schematic diagram of the operation of engaging a parking brake lining form-fitting portion of a parking brake lining into a brake disc form-fitting portion of a brake disc under relatively favorable circumstances;

[0063] Figures 13a to 13e is based on Figure 3 and Fig.11 Schematic diagram of the operation of engaging a parking brake lining form-fitting portion of a parking brake lining into a brake disc form-fitting portion of a brake disc under relatively unfavorable circumstances;

[0064] Figures 14a to 14d is a schematic diagram of the operation of engaging a parking brake lining form-fitting portion of a parking brake lining into a brake disc form-fitting portion of a brake disc using a clutch; and

[0065] Figures 15a to 15c The invention is a schematic diagram of the operation of engaging a parking brake lining form-fitting portion of a parking brake lining into a brake disc form-fitting portion of a brake disc using an axial spring member. DETAILED DESCRIPTION

[0066] Figure 1A side view of a brake assembly 1 according to a first exemplary embodiment is shown. The brake assembly 1 comprises a brake disc 10 rotatable about an axis of rotation R. Here, the side view corresponds to a view in the direction of the axis of rotation R on the radial surface side of the brake disc relative to the axis of rotation R. The brake assembly 1 further comprises a parking brake assembly 20, which comprises a parking brake caliper 21, which serves as a parking brake lining support assembly for carrying a parking brake lining 22. In the exemplary embodiment, the parking brake caliper 21 is a floating caliper, which also carries another parking brake lining (not shown) on the opposite radial surface side of the brake disc 10. However, in other embodiments, the parking brake caliper 21 may be a fixed caliper or may be a parking brake lining support assembly for only one or more than two parking brake linings. The brake assembly 1 further comprises a service brake assembly 30, which comprises a service brake caliper 31, which serves as a service brake lining support assembly for carrying a service brake lining 32. Similar to the parking brake caliper 21, in the exemplary embodiment, the service brake caliper 31 is a floating caliper, wherein another service brake lining is arranged on the opposite radial surface side of the brake disc 10 (not shown). In an alternative embodiment, the service brake caliper may also be a fixed caliper or may be a service brake lining support assembly for only one or more than two service brake linings. Each of the parking brake caliper 21 and the service brake caliper 31 includes or may be operatively connected to an actuator mechanism to move the corresponding parking brake lining 22 or service brake lining 32, respectively, wherein each of the parking brake lining or the service brake lining is axially movably supported in the parking brake caliper 21 or the service brake caliper 31, respectively, in the axial direction toward the brake disc 10 relative to the rotation axis R to apply a clamping force when in contact.

[0067] In an exemplary embodiment, the parking brake lining 22 is arranged at a radial parking brake lining distance rPB, which is the distance from the rotation axis R to the middle height of the parking brake lining 22 in the radial direction. In addition, the service brake lining 32 is arranged at a radial service brake lining distance rSB, which is the distance from the rotation axis R to the middle height of the service brake lining 32 in the radial direction. Here, the radial parking brake lining distance rPB is greater than the radial service brake lining distance rSB. In particular, the parking brake lining 22 and the service brake lining 32 are configured and arranged so that each of the parking brake lining 22 and the service brake lining 32 acts on a different circumferential brake disc portion without overlap. In other words, the parking brake lining 22 and the service brake lining 32 are configured and arranged so that the outer radial distance of the service brake lining 32 is less than the inner radial distance of the parking brake lining 22. In alternative embodiments, the parking brake lining 22 and the service brake lining 32 may provide some overlap in terms of being configured and arranged to act partially on the same circumferential brake disc portion.

[0068] Since the radial parking brake lining distance rPB is greater than the radial service brake lining distance rSB, for the parking brake lining 22, the radial parking brake lining distance rPB as a lever or lever arm vector with respect to the torque relative to the rotation axis R requires a smaller clamping force to achieve the same braking torque relative to the service brake lining 32, which is arranged at the radial service brake lining distance rSB, and the radial service brake lining distance as a lever with respect to the torque around the rotation axis R is smaller than the radial parking brake lining distance. In an exemplary embodiment, the brake disc 10 comprises, not necessarily, a parking brake disc portion 10a as an outer annular portion extending circumferentially around the rotation axis R for forming a friction pair with the parking brake lining 22 and a service brake disc portion 10b as an inner annular portion extending circumferentially around the rotation axis R for forming a friction pair with the service brake lining 32, wherein the friction coefficient of the service brake disc portion 10b is higher than the friction coefficient of the parking brake disc portion 10a to at least partially compensate for the smaller lever due to the radial service brake lining distance rSB in order to reduce the required clamping force. However, in an alternative embodiment, the friction coefficient of the parking brake disc portion 10a is higher than the friction coefficient of the service brake disc portion 10b to further reduce the required clamping force.

[0069] Figure 2A side view of a brake assembly 1' according to a second exemplary embodiment is shown. Reference numerals denote the same features as in the first embodiment, but are indicated by "'". Therefore, a detailed description of the common features is omitted. The second embodiment differs from the first embodiment in the arrangement and configuration of the parking brake lining 22' and the service brake lining 32' and the respective parking brake disc parts 10a' and service brake disc parts 10b', where the parking brake linings are arranged at a radial parking brake lining distance rPB, which is smaller than the radial service brake lining distance rSB. Therefore, the clamping force required for the parking brake lining 22' to achieve the same braking torque as the service brake lining 32' needs to be higher. Similar to the first embodiment, the parking brake disc part 10a', which is an inner annular part, provides a higher friction coefficient than the service brake disc part 10b', which is an outer annular ring part, to at least partially compensate for this effect.

[0070] Figure 3 A side view of a brake assembly 1″ according to a third exemplary embodiment is shown. Reference numerals denote the same features as in the first embodiment, but are indicated by “””. Therefore, a detailed description of the common features is omitted. The third embodiment differs from the first embodiment in that the brake disc 10″ comprises a brake disc form-fitting portion 11″ as an annular portion extending circumferentially around the rotation axis R to provide a corresponding parking brake lining form-fitting portion 22a″ ( Figure 4 ) is connected in a form-fitting manner, thereby further supporting the friction-based parking brake function described above. In an exemplary embodiment, the brake disc form-fitting portion 11 ″ is formed by serrations arranged equidistantly in the circumferential direction.

[0071] Figure 4 Shown is applicable according to Figure 3 A sectional view of a cross section of a parking brake assembly of a brake assembly 1". The parking brake assembly includes a parking brake caliper 21", which accommodates an actuator 24", which is movable in an axial direction relative to the rotation axis R to move a parking brake lining 22", each of which is arranged on an opposite radial surface side of the brake disc 10" toward the brake disc 10". One parking brake lining 22" arranged between one radial surface side of the brake disc 10" and the actuator 24" is directly actuated by the actuator 24", while the other parking brake lining 22" is indirectly actuated due to the parking brake caliper 21" configured as a floating caliper. In an exemplary embodiment, a transmission member 23" is arranged on each surface side of the corresponding parking brake lining 22" facing away from the brake disc 10" in the axial direction. In the exemplary embodiment, the transmission member 23 represents a bearing member 25 or a roller, respectively, which will be directed to Fig. 9is described in more detail. However, in other embodiments, the transfer member 23 may include other functions to actuate, support and / or guide the parking brake lining 22. Each of the parking brake linings 22" includes a parking brake lining form-fitting portion 22a", each parking brake lining form-fitting portion facing a corresponding brake disc form-fitting portion 11". on each outer radial surface side of the brake disc 10". The brake disc 10" also includes a cooling channel 12", which is formed by the distance between two radially extending outer portions of the brake disc 10", which are connected by a plurality of connecting members 13". In an exemplary embodiment, the connecting members 13" form an integral part of the brake disc 10".

[0072] Figure 5 A side view of a brake disc 10'" according to an exemplary embodiment is shown. In this variant, the brake disc 10'" comprises a plurality of mounting holes 14'" to mount the brake disc form-fitting portion as a separate annular component on the brake disc 10'".

[0073] Figure 6 Shown according to Figure 5 A cross-sectional view of a cross section of a brake disc 10"'. Reference numerals indicate Figure 4 The same features are indicated by "'". Therefore, the detailed description of the common features is omitted. Figure 5 Description, Figure 6 The embodiment of the brake disc 10 ″′ shown in FIG. Figure 4 The embodiment of the brake disc 10 ″ in is different in that the brake disc form-fitting portion 11 ″′ is mounted on the brake disc 10 ″′, here by means of mounting members 15 ″′ (eg screws, bolts, rivets or the like).

[0074] Figure 7 A side view of a brake assembly 1"" according to a fourth exemplary embodiment is shown. Reference numerals denote the same features as in the second embodiment, but are indicated by """". Therefore, a detailed description of the common features is omitted. The fourth embodiment differs from the first embodiment in that the brake disc 10"" comprises a brake disc form-fitting portion 11"" as an annular portion extending circumferentially around the rotation axis R to provide a corresponding parking brake lining form-fitting portion 22a"" Figure 8 ) form-fit connection, thereby further supporting the friction-based parking brake function described above. In the exemplary embodiment, the brake disc form-fit portion 11"" is formed by serrations arranged equidistantly in the circumferential direction. Although Figure 3 The brake disc shape matching portion 11" is set as an outer annular portion, but Figure 7The brake disc form-fitting portion 11"" is an inner annular portion to correspond to the smaller radial parking brake lining distance rPB.

[0075] Figure 8 Shown is applicable according to Figure 7 A cross-sectional view of a cross-section of a parking brake assembly 1 ””. Figure 8 The parking brake components and Figure 4 The parking brake assembly shown in FIG. 1 differs in that the friction and form-fitting cooperation of the brake disk 10 ″″ with the parking brake lining 22 ″″ is provided at an inner annular portion of the brake disk 10 ″″.

[0076] Fig. 9 A sectional view of a cross section of a brake assembly according to a fifth exemplary embodiment of the brake assembly is shown. Here, a parking brake lining 22""' partially extends from the outer periphery of a brake disc 10""' into a cooling channel. The parking brake lining 22""' is axially movable relative to the rotation axis to contact an inner radial surface side of the cooling channel, which in an exemplary embodiment also includes a brake disc form-fitting portion 11""' corresponding to a parking brake lining form-fitting portion (not shown). However, in other embodiments, the parking brake lining 22""' and the brake disc 10""' may only provide a friction pairing. The parking brake lining 22""' may be movable to only one inner radial surface side of the brake disc 10""' in order to apply a clamping force. However, in other embodiments, the parking brake lining 22""' may also be actuated to apply a clamping force on one inner radial surface side or the other inner radial surface side of the brake disc 10""'. In a further embodiment, the parking brake lining 22""' may include two parking brake braking surfaces, which are separated in the axial direction to simultaneously apply clamping forces on two inner radial surface sides of the brake disc 10""', which can also be achieved by two separate parking brake linings 22""' (both extending in the cooling channel).

[0077] Fig.10 A cross-sectional view showing a section of a brake assembly according to a sixth exemplary embodiment is shown. Fig. 9 ” but are indicated by “””””. Therefore, a detailed description of the common features is omitted. The sixth embodiment differs from the fifth embodiment in that the parking brake lining 22””” extends from the inner periphery of the brake disc 10””” into the cooling channel. The same principles as described above for the fifth embodiment regarding actuating the parking brake lining 22””” to apply a clamping force on the brake disc 10””” also apply to the sixth embodiment.

[0078] Fig.11 Shown according to Figure 3A top view of a cross section of a brake assembly 1 ″. Due to the parking brake lining shape matching portion 22a ″ ( Figure 3 ) may not fit the brake disc shape 11" ( Figure 3 ) are precisely aligned, the parking brake caliper 21″ therefore comprises a bearing member 25″, which is arranged on the surface side of the parking brake lining 22″ facing away from the radial surface side of the brake disc 10″ and is supported by the parking brake caliper 21″. In addition, the parking brake caliper 21″ comprises a spring member 26″, which is located on each lateral side of each of the parking brake linings 22″ to provide an elastic connection of the parking brake lining 22″ to the parking brake caliper 21″ in the projection direction of the rotational movement of the brake disc 10″, the projection direction being perpendicular to the rotation axis R and perpendicular to the radial direction relative to the rotation axis R. Each spring member 26″ is partially accommodated in a recess of the parking brake caliper 21″, the open end of which also partially serves as a support for the respective parking brake lining 22″ to limit the movement ability in the projection direction. The spring member 26" is configured and arranged to center the corresponding parking brake lining 22" in a middle position in the projection direction within the parking brake caliper 21" when the parking brake lining 22" is not actuated, so as to provide sufficient available travel for the parking brake lining form-fitting portion to align with the brake disc form-fitting portion.

[0079] Figures 12a to 12e The parking brake lining positive-fitting portion 22a" of the parking brake lining 22" is shown in a relatively favorable situation. Figure 3 and 11 In principle, when the parking brake assembly is actuated accordingly, the spring member 26" and the bearing member 25" allow the parking brake lining 22" to come into contact with the brake disc 10" essentially immediately. However, in order to transmit the clamping force, the brake disc 10" may have to be rotated slightly to overcome the clearance between the parking brake lining 22" and the parking brake caliper 21", which results in a "non-braking travel". In advantageous circumstances, according to Fig.12a The parking brake lining 22" is centered by the spring member 26" when not actuated. When actuated, as shown by the arrow indicated in the axial direction, the parking brake lining 22" moves in the axial direction relative to the rotation axis R toward the brake disc 10" ( Figure 12b ). Fig.12c The initial contact of the parking brake lining form-fitting portion with the brake disc form-fitting portion is shown. When the brake disc 10" is rotated further, the parking brake lining form-fitting portion is fully engaged with the brake disc form-fitting portion, which causes the parking brake lining 22" to move in the projected direction of the rotational movement (as indicated by the vertical arrow) ( Fig.12d). Therefore, the spring member 26" upstream in the projection direction is extended, while the spring member 26" downstream in the projection direction is compressed. When the parking brake lining 22" abuts against the parking brake caliper 21" or when the gap between the parking brake lining 22" and the parking brake caliper 21" in the projection direction is closed, the non-braking stroke of the brake disc 10" stops.

[0080] Figures 13a to 13e The parking brake lining positive-fitting part of the parking brake lining 22 ″ is shown in a relatively unfavorable situation. Figure 3 and Fig.11 The operating scheme of the brake disc is the brake disc form-fit part. Fig.13a and 13b Basically corresponds to Fig.12a and 12b , so its description is omitted. Fig.13c As shown, the initial contact of the parking brake lining 22" with the brake disc 10" causes the parking brake lining form-fitting portion to engage the brake disc form-fitting portion at a serration of the brake disc form-fitting portion upstream with respect to the rotational direction or projection direction. As a result, the parking brake lining 22" first moves slightly upstream and then moves to finally abut against the parking brake caliper 21", as shown in FIG. Fig.13d and 13e As shown. Therefore, the unbraked stroke of the brake disc 10 ″ is longer than in a more favorable situation. Therefore, the gap between the parking brake lining 22 ″ and the parking brake caliper 21 ″ is configured to keep the unbraked stroke of the brake disc 10 ″ at a predetermined maximum value in any case.

[0081] Figures 14a to 14d The operation scheme of using the overload clutch 27"""' to engage the parking brake lining positive-fitting part of the parking brake lining into the brake disc positive-fitting part of the brake disc 10"""' is shown. The configuration of the corresponding parking brake assembly corresponds to Figures 12a to 12e and Figures 13a to 13e configuration, except for the additional overload clutch 27''. Fig.14a It shows that Fig.12e or Fig.13e If the braking torque becomes too high, ie exceeds a predetermined torque threshold, the overload clutch 27"""' allows the parking brake lining 22"""' to move away from the brake disc 10"""', as shown Fig.14b As shown. Fig.14c As the braking torque of the parking brake lining 22"""' is released, the parking brake lining 22"""' moves back toward the brake disc 10"""' and returns to the position as shown in FIG. Fig.14d Clamped state shown.

[0082] Figures 15a to 15c An operating scheme is shown for engaging the parking brake lining form-fitting portion of the parking brake lining to the brake disc form-fitting portion of the brake disc 10”””” using an axial spring member 28””””. The axial spring member is arranged between the actuator 24”””” and the axial spring member support 29”””” to preload the actuator 24”””” in the axial direction relative to the rotation axis R. If the parking brake lining form-fitting portion is not precisely aligned with the brake disc form-fitting portion when actuating the parking brake lining 22”””” to engage the brake disc 10””””, the brake disc 10”””” slides relative to the parking brake lining to the next section of the parking brake lining form-fitting portion, for example the next serration section, and the parking brake lining form-fitting portion can correspondingly snap into the brake disc form-fitting portion to transmit the clamping force. Thereby, the axial spring member 28”””” allows the same overload clutch function as the aforementioned overload clutch 27”””’ to be achieved.

[0083] The present invention has been described with respect to exemplary embodiments. However, the present invention is not limited to these exemplary embodiments.

[0084] Reference Symbols List

[0085] 1, 1', 1", 1", 1"""" Brake assembly

[0086] 10, 10', ..., 10"""" Brake disc

[0087] 10a, 10a' Parking brake disc part

[0088] 10b, 10b' Service brake disc part

[0089] 11", ..., 11""" Brake disc form fit

[0090] 12”, 12”’, 12”” cooling channel

[0091] 13”,……,13””” Connecting components

[0092] 14”' Mounting Holes

[0093] 15”' Mounting Components

[0094] 20, 20', 20", 20"" Parking brake assembly

[0095] 21, 21', 21", 21", 21"""" Parking brake caliper (parking brake pad bracket assembly)

[0097] 22, 22', 22", 22", ..., 22"""" parking brake lining 22a", 22a"" parking brake lining form fit part

[0099] 23” transfer member

[0100] 24”, 24””, 24”””” Actuator

[0101] 25” bearing member

[0102] 26”, 26”””’ Spring member

[0103] 27"""' Overload clutch

[0104] 28”””” Axial spring member

[0105] 29”””” Axial spring member support

[0106] 30, 30', 30", 30"" Service brake assembly 31, 31', 31", 31" Service brake caliper (service brake pad bracket assembly)

[0108] 32, 32', 32", 32"" Service brake pads

[0109] R Rotation axis

[0110] rPB Radial parking brake pad distance

[0111] rSB Radial service brake lining distance

Claims

1. A brake assembly (1, 1', 1", 1", 1"""") for a vehicle, comprising: a brake disc (10, 10', ..., 10"""") rotatable about an axis of rotation (R), At least one service brake assembly (30, 30', 30", 30""), comprising at least one service brake lining (32, 32', 32", 32"") and configured to apply a service braking force on a radial surface side of the brake disc (10, 10', ..., 10""""), wherein the at least one service brake lining (32, 32', 32", 32"") is axially movable relative to the rotation axis (R) and comprises a service brake braking surface facing the radial surface side of the brake disc (10, 10', ..., 10"""") to apply the service braking force, and at least one parking brake assembly (20, 20', 20", 20""), comprising at least one parking brake lining (22, 22', 22", 22", ..., 22"""") and configured to apply a parking brake force on the radial surface side or another radial surface side of the brake disc (10, 10', ..., 10""""), wherein the at least one parking brake lining (22, 22', 22", 22", ..., 22"""") is axially movable relative to the rotation axis (R) and comprises a parking brake braking surface facing the radial surface side or another radial surface side of the brake disc (10, 10', ..., 10"""") to apply the parking brake force, wherein the parking brake braking surface of the at least one parking brake lining (22, 22', 22", 22", ..., 22"""") is arranged at a radial parking brake lining distance (rPB) relative to the rotation axis (R), and the radial parking brake lining distance is different from the radial service brake lining distance (rSB) of the service brake braking surface of the at least one service brake lining (32, 32', 32", 32"").

2. The brake assembly (1, 1", 1"""") according to claim 1, wherein: Relative to the axis of rotation (R), the radial parking brake lining distance (rPB) is greater than the radial service brake lining distance (rSB).

3. The brake assembly (1', 1", 1"""") according to claim 1, wherein: Relative to the axis of rotation (R), the radial parking brake lining distance (rPB) is smaller than the radial service brake lining distance (rSB).

4. Brake assembly (1, 1', 1", 1", 1"", 1"""") according to any of the preceding claims, wherein: The brake disc (10, 10', ..., 10"""") comprises: a parking brake disc portion (10a, 10a'), which faces the parking brake braking surface of the at least one parking brake lining (22, 22', 22", 22", ..., 22"""") in at least one rotational position of the brake disc (10, 10', ..., 10""""); and a service brake disc portion (10b, 10b'), which faces the parking brake surface of the at least one parking brake lining (22, 22', 22", 22", ..., 22"""") in at least one rotational position of the brake disc (10, 10', ..., 10"""") The parking brake disc portion (10a, 10a') is configured to provide a friction coefficient different from the friction coefficient of the friction pairing between the service brake disc portion (10b, 10b') and the service brake braking surface of the at least one service brake lining (32, 32', 32", 32"") in a rotational position, and wherein the friction pairing between the parking brake disc portion (10a, 10a') and the parking brake braking surface of the at least one parking brake lining (22, 22', 22", 22"", ..., 22"""") is configured to provide a friction coefficient different from the friction coefficient of the friction pairing between the service brake disc portion (10b, 10b') and the service brake braking surface of the at least one service brake lining (32, 32', 32", 32"").

5. Brake assembly (1, 1', 1", 1", 1"", 1"""") according to any of the preceding claims, wherein The friction coefficient of the friction pairing of the parking brake braking surface of the at least one parking brake lining (22, 22', 22", 22", ..., 22"""") with the brake disc (10, 10', ..., 10"""") is at least 0.

55.

6. Brake assembly (1", 1"") according to any one of the preceding claims, wherein: The at least one parking brake lining (22", 22"") is arranged to extend from the outer periphery or inner periphery of the brake disc (10", 10"', 10"") into a cooling channel (12", 12"', 12"") of the brake disc (10", 10"', 10""), and the cooling channel is formed between two outer radial surface sides of the brake disc (10", 10"', 10"").

7. The brake assembly (1", 1"") according to claim 6, wherein: The brake assembly comprises the parking brake assembly, the parking brake assembly comprising the at least one parking brake lining (22", 22"") arranged to extend in a cooling channel (12", 12"', 12"") of the brake disc (10", 10"', 10""); and another parking brake assembly.

8. Brake assembly (1", 1", 1"""") according to any of the preceding claims, wherein: The parking brake braking surface of the at least one parking brake lining (22", 22", ..., 22"""") comprises a parking brake lining form-fitting portion (22a", 22a""), and the brake disc (10", ..., 10"""") comprises a corresponding brake disc form-fitting portion (11", ..., 11""") at the radial parking brake lining distance (rPB).

9. The brake assembly (1", 1", 1"""") according to claim 8, wherein: The parking brake assembly (20", 20"") comprises a parking brake lining support assembly (21", 21", 21""""), the parking brake lining support assembly carrying the at least one parking brake lining (22", 22", ..., 22"""") and configured to move the at least one parking brake lining (22", 22", ..., 22"""") along the axial direction toward the brake disc (10", ..., 10""") or allow corresponding movement of the at least one parking brake lining (22", 22", ..., 22"""""), and wherein the The parking brake assembly (20", 20"") comprises at least one local displacement member (25", 26", 26"""'), which is arranged between the at least one parking brake lining (22", 22"", ..., 22"""") and the parking brake lining support assembly (21", 21", 21"""") and is configured to allow the at least one parking brake lining (22", 22"", ..., 22"""") to be relatively displaced relative to the parking brake lining support assembly (21", 21", 21"""") along a direction within the braking surface plane.

10. The brake assembly (1") according to claim 9, wherein: The at least one local displacement member (25") is a bearing member (25") arranged on a surface side of the at least one parking brake lining (22") opposite to the braking surface of the at least one parking brake lining (22") .

11. The brake assembly (1") according to claim 9 or 10, wherein: The at least one local displacement member (26", 26"""') is a spring member (26", 26"""'), which is arranged on a lateral surface side of the at least one parking brake lining (22", 22"", ..., 22""""), which lateral surface side is basically parallel to the axial direction and perpendicular to a projection of the rotational movement of the brake disc (10", ..., 10""") parallel to the at least one parking brake lining (22", 22"", ..., 22""""), wherein a corresponding spring force acts in the direction of the projection of the rotational movement of the brake disc (10", ..., 10""") parallel to the at least one parking brake lining (22, 22', ..., 22""').

12. Brake assembly (1", 1", 1""") according to any one of claims 9 to 11, wherein: The parking brake assembly (20", 20"") comprises an overload clutch (27"""'), which is arranged on a surface side of the at least one parking brake lining (22"""') opposite to the braking surface of the at least one parking brake lining (22"""').

13. Brake assembly (1", 1", 1""") according to any one of claims 9 to 12, wherein: The parking brake assembly (20", 20"") includes an axial spring member (28""""), which is arranged on a surface side of the at least one parking brake lining (22"""") opposite to the braking surface of the at least one parking brake lining (22""""), wherein a predetermined axial spring force acts in the axial direction.

14. A method for applying a parking brake force on a radial surface side of a brake disc (10, 10', ..., 10"""") of a brake assembly (1", 1"") according to any one of claims 6 to 13, wherein: The at least one parking brake lining (22", 22"") of the brake assembly (1", 1"") according to claim 6 is activated to apply the parking brake force only when the vehicle is stationary.

15. A vehicle comprising a brake assembly (1, 1", 1""") according to any one of claims 1 to 13, in, The vehicle is preferably configured as a commercial vehicle, a truck, a trailer, a bus, and / or a combination of a tractor and a trailer, and / or Wherein, the vehicle preferably includes a pure electric, hybrid or traditional powertrain system.

Images